Improvement in stoves



W. Y. CRUIKfiHANQ Patented Jan. 25,1876

UNITED STATES PATENT Carton.

WILLIAM YOUNG ORUIKSHANK, OF SHAMOKIN, PENNSYLVANIA.

IMPROVEMENT IN STOVES.

Specification forming part of Letters Patent No. 172,7 ll, dated January 25, 1876; application filed January 7, 1876.

To all whom it may concern:

Be it known that 1, WILLIAM Y. GRUIK- SHANK, of Shamokin, in the county of North'- umberland and State of Pennsylvania, have invented a new and Improved Stove for Burning Goal-Dust, of which the following is a specification: I

In the accompanying drawing, Figure 1 represents a vertical central section on line a c, Fig. 2, and Fig. 2 a horizontal section on line a as, Fig. 1, of my improved stove or furnace for burning coal-dust.

Similar letters of reference indicate correspondin g parts.

The object of my invention is to utilize the vastlyaccumulating anthracite coal-dust of coal-mines in direct manner, without special preparation'and expense, so that the same is fed in dried, heated, and well-regulated state to be burned in the stove or furnace.

The invention consists of a distributingcone, drying-plate, and revolving feeder, by which the coal-dust is conveyed in small and thin sheets continually to the fire below.

In the drawing, A represents a magazine, which is arranged on the top of the stove or furnace B, and filled with coal-dust through the aperture at the top. l

A conical diaphragm of sheet metal is supported in suitable manner in central position in the magazine, for distributing the coal-dust equally by gravity to the drying-plate D.

The diameter of the base of cone 0 is somewhat larger than the inner diameter of the ring-shaped drying-plate D, so that the coaldust falls on the inner edge of the same, be ing thinly distributed therein, to be dried and heated by the fire.

Below the drying-plate D is arranged, on suitable supports a, a ring-shaped plate, E, having a corresponding interior opening and cogs at the outer'oircumference, which gear with a pinion, E.

The ring-plate E is revolved by power applied to the shaft of the pinion by weight or spring, or in any other suitable manner.

A feeder plate or arm, F, is attached to the revolving ring-plate E, and extended radially over the drying-plate, so as to carry the thin ljayer of coal-dust deposited therein into the The finer dust particles ignite and form a gas-flame, being thus consumed before reaching the grate, while the coarser particles fall onto the grate, and are there consumed in the usual way.

The gradual feeding of the dry and heated coal-dust before being conveyed to the fire utilizes even the finest particles, while the coarser particles are fed regularly and so slowly that the quantity is not too great to prevent the ready passage of the air through the same, so as to assist in their complete combustion.

The coal-dust may be burned in large quantities without choking up the stove or furnace, and thereby employed without special preparation for various heating and other purposes.

Having thus described myinvention, Iolaim as new and desire to secure by Letters Patent- I 1. In a stove or furnace for burning coaldust, the combination, with the magazine supplied with coal-dust, of a distributing cone or diaphragm, a ring-shaped drying-plate, and a revolxin g feeder that throws the thin layer of coal-dust into the fire below, substantially in the manner and for the purpose set forth.

2. Ina stove or furnace for burning coaldust a distributing cone or diaphragm, whose diameter at the base is somewhat larger than the interior opening of the ring-shaped drying-plate to drop the coal-dust near the inner circumference of the same, substantially forthe purpose described.

3. In a stove or furnace for burning coal dust, a revolving ring-plate with radial t'eede1, to clear drying-plate continually from dust, substantially as set forth.

WILLIAM YOUNG GRIIIKSHANK.

Witnesses J. M. CALDWELL, J. B. VAN ZANT. 

